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Elon Musk shows off Starship prototype's rocket engine ahead of test fire (photo) – Space.com

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A new photo shows just how big SpaceX’s Starship Mars-colonizing vehicle will be.

SpaceX founder and CEO Elon Musk tweeted an image Sunday (May 3) looking up at the belly of the latest Starship prototype, the SN4, which is on the test stand at the company’s South Texas site. The shot shows the SN4’s single Raptor engine, looking extremely lonely in the center of a 30-foot-wide (9 meters) expanse.

“SN4 fire soon. Raptor looks so smōl,” Musk wrote in the tweet.

Related: SpaceX’s Starship and Super Heavy rocket in pictures

As Musk noted, the Raptor will get a workout soon, in the form of a “static fire” test, during which the engine will blaze while the rocket is tied down. Indeed, SpaceX aimed to perform the engine test Sunday night but called it off because the Raptor’s liquid methane propellant got too warm, Musk explained in another tweet. The next attempt will come soon, likely sometime today (May 4).

If the static fire goes well, SpaceX will start gearing up for an uncrewed test flight with the SN4, taking the prototype about 500 feet (150 m) into the South Texas skies.

Future prototypes will go much higher. For instance, the SN5 will have three Raptors, and SpaceX wants to send that vehicle about 12 miles (20 kilometers) up, Musk has said.

The final Starship will be more powerful still, boasting six engines. The 165-foot-tall (50 m), 100-passenger craft will be capable of blasting itself off the surface of the moon and Mars, Musk has said.

But Starship will need help breaking free of our planet’s gravitational grip. So it will launch off Earth atop a giant rocket called Super Heavy, which will be powered by dozens of Raptors. (In earlier designs, Super Heavy could boast 37 engines. But Musk recently tweeted that the rocket will be powered by “only” 31 Raptors.)

Both Super Heavy and Starship will be fully reusable, potentially slashing the cost of spaceflight enough to enable the colonization of Mars, Musk has said. And the Red Planet isn’t the pair’s only exploration target; the moon is also in play. For example, NASA just awarded SpaceX a contract to develop Starship as a lunar lander, to ferry astronauts to the moon’s surface for the agency’s Artemis program, which aims to land humans in 2024.

Two other industry groups got similar human-lander contracts: Alabama-based Dynetics and a team headed by Blue Origin, the spaceflight company led by Amazon.com founder Jeff Bezos. Not all of the privately developed landers will necessarily end up flying NASA astronauts; the agency will assess the designs and decide which ones to continue funding. Ultimately, NASA will choose from among the vehicles that make it through to operational flight, purchasing landing missions as transportation services.  

Mike Wall is the author of “Out There” (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook

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Watch SpaceX launch its latest batch of Starlink satellites, including one with a sun visor – TechCrunch

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SpaceX just launched its most important and historic launch ever this past weekend, flying NASA astronauts for the first time – on Wednesday, it’s set to follow that up with a less significant Falcon 9 rocket launch, but one that’s still vital to the company’s future. This mission is the latest of SpaceX’s Starlink launches, which the company is using to put up a vast network of small satellites to provide low-cost, high-bandwidth internet access to customers globally.

SpaceX’s Starlink mission today has a launch window of 9:25 PM EDT (6:25 PM PDT) and includes a payload of 60 more satellites for the constellation, which already has 420 operating in low Earth orbit. The goal is ultimately to launch as many as 40,000 or of these small satellites in order to blanket the globe with connectivity that’s broadly available, and that provides rock solid network consistency by handing off connections among the satellites as they make their way around the Earth.

This launch was originally scheduled to fly the week prior to SpaceX’s Demo-2 crewed mission, which carried NASA astronauts Bob Behnken and Doug Hurley to the International Space Station on Saturday and Sunday, but was bumped due to a scheduling conflict with a ULA launch, and then further postponed until after the astronaut flight. It’s still already the fifth batch of 60 Starlink satellites that SpaceX has flown in 2020. In total, SpaceX is hoping for up to two dozen Starlink launches in total before year’s end, which will help it meet its goal of launching an initial beta service in Canada and the U.S. later this year, with a more global rollout following in 2021 or 2022.

This launch will take off from Cape Canaveral Air Force Station in Florida, and will use a Falcon 9 first stage that flew previously on four previous missions. SpaceX will attempt to recover the booster again through a controlled landing, and will also try to catch the fairing halves used to protect the satellite cargo using its ‘Ms. Tree’ and ‘Ms. Chief’ ships.

One key novel element for this flight is the test of a new technology SpaceX is hoping will help mitigate the impact of the Starlink constellation on night sky observation from Earth. Scientists have complained that Starlink is bright enough to interfere with sensitive optical instrumentation used to gather data deep space bodies and phenomena. To address that, SpaceX has designed a deployable ‘visor’ system which extends from Starlink satellites post-launch and attempts to block sunlight reflecting off of their communications arrays.

SpaceX has equipped one of the 60 satellites on this launch with that system, as way of testing its efficacy before making it a standard part of the Starlink satellite build going forward. Depending on results, it could become a permanent fixture on all SpaceX’s Starlink spacecraft for future missions.

Should today’s launch be delayed (weather is currently looking around 60% favorable for the mission), there’s a backup opportunity tomorrow, June 4 at 9:03 PM EDT (6:03 PM PDT).

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Why a rocket launch can’t unite us right now – The Verge

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At 9:30AM ET on Tuesday, three American astronauts symbolically rang the Nasdaq opening bell from space — a celebration of SpaceX’s historic launch that sent astronauts into orbit three days prior. The short ceremony played out live on the Nasdaq’s giant screen in Times Square, with various NASA personnel clapping as one astronaut clanged a bell on the International Space Station.

The video glowed over the same streets where, in the days and nights before, thousands of demonstrators had gathered nearby to protest systemic racism and police brutality against black Americans.

This kind of cognitive dissonance has permeated SpaceX’s first passenger flight — the first time that NASA astronauts have launched from the US in nearly a decade. NASA has been waiting for this moment since the last Space Shuttle landed in 2011, and now the agency wants to celebrate. It wants the United States and the world to celebrate, too. But if the space community expects the world to care about the things we do in space, there must be an acknowledgment of how broken things are on the ground and the injustices that still exist in the United States.

That might mean passing up the chance to ring the bell on Wall Street while the economy remains in tatters. It might mean a compassionate statement from the crew addressing the people on the Earth below, instead of answering rote questions from dignitaries and press.

There are eerie echoes between this SpaceX launch and Apollo 8, as others have pointed out. That mission, the first to reach the vicinity of the Moon, launched in 1968, a year that mirrors 2020 in its apocalyptic bleakness. The assassination of Martin Luther King Jr. had sparked protests throughout the country. Space enthusiasts like to look back on that mission with rose-colored glasses, as something that served as a shining beacon of hope during a tough time for the country.

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But as others have pointed out, Apollo 8 didn’t fix the turmoil of the time. Just look at where we stand today. Likewise, SpaceX’s launch did not unite the country or the world, though NASA certainly tried to make that claim. “This was an amazing moment of unity for the nation,” NASA administrator Jim Bridenstine said during a call with the astronauts after the launch. “It was an amazing moment for the whole world to look out in the midst of the coronavirus pandemic and the challenges. We’re able to have very, very special moments where we can all look at the future and say that things are going to be brighter tomorrow than they are today.”

If only it were that simple. The problem that NASA and the space community doesn’t often understand is that spaceflight still isn’t inclusive. These launches may be fun and emotional to watch, but they don’t always feel like they’re for everyone. Space is still an exclusive and expensive domain, and the people who are in charge of this industry are still predominately male and white. The idea that a launch could bring the public together during a time when widespread racism and injustice are at the forefront of people’s minds is naive at best.

To be fair to NASA, Bridenstine acknowledged that an important space launch couldn’t “fix” the world. “Look, I think what NASA does is astonishing. It’s impressive, and it does bring people together,” he said. “If the expectation was that things on the ground were going to change because we launched a rocket, I think maybe the expectation might have been a little high.” He then proceeded to talk about just how many people tuned into NASA and SpaceX’s launch coverage over the weekend.

Those numbers are just not important right now. Yes, the launch must have been a small bright moment for people who turned their attention to a rocket soaring into space for one brief moment this weekend. But if the space community wants to really have a uniting effect on the world, it must be deeply rooted in the happenings of Earth. And the space world seems to exist in a bubble where these things just don’t have an effect.

While NASA acknowledged the problems going on down on the surface throughout the SpaceX launch, the statements didn’t stray much from touting the idea that this launch was a beacon of hope for the world during a difficult time. Meanwhile, the industry has mostly sheltered in its celebratory bubble. While many other major industries have issued a flurry of statements addressing the protests, the giants of the spaceflight industry remained silent.

Instead, compassionate demands for change have been left to individuals in the spaceflight world, including former astronauts.

“It is not this mission that will bring us together but the individual people following it who step forward to lock arms with people we don’t know but must learn to trust,” former astronaut and former NASA Administrator Charles Bolden said on Twitter.

“Today demands we take pride not only in reaching the sky, but also sustained heights of decency, truth, compassion and justice for all, now!” former astronaut Mae Jemison said on Twitter.

“America let’s get our crap together,” former astronaut Leland Melvin said during a Facebook video. “This is unsatisfactory. We’ve got to stop this. And it’s going to be the good people that do nothing now that start doing something to stamp this hatred, evil, and racism out.”

Even if the space industry were to come out with a unified statement, from the outside, it feels like it’s more or less business as usual within the space world. NASA and space companies continue to move forward with many of the same things they had planned, such as handing out contracts for major programs, making major announcements, and launching vehicles. But the times are anything but business as usual. If the space community wants to unite people, then it must make people feel like they are part of space, and that means being conscious of where people’s lives are on the ground. It means committing to fix the wrongs in our society while also building vehicles to break the bonds of gravity.

Only then will people feel like they can come together to wonder in our journey toward the stars.

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Evaluating SpaceX's Starlink Push – NASASpaceflight.com

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Evaluating SpaceX’s Starlink Push – NASASpaceFlight.com

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